FLAT METAL MEMBER AND PROFILED MEMBER Russian patent published in 2007 - IPC E04C2/42 

FIELD: construction, particularly flat metal members used to produce profiles adapted, for instance, for roof facing and plate-like member fastening.

SUBSTANCE: flat metal member has surface extending from the first outer edge to the second outer edge opposite to the first outer edge. Metal member zone adjacent the first outer edge creates the first edge zone. Metal member zone adjacent to the second outer edge creates the second edge zone. The first and the second edge zones are connected with each other through central zone arranged in-between. At least one edge zone has at least one fully framed orifice, wherein the orifice frame is partly defined by above edge zone and central zone. Central zone has at least two parts including two outer areas and central area located in-between. Outer orifice forming areas are bent with respect to central area. Parts form orifice frame section. Central zone is made as a single whole with both edge zones of metal member.

EFFECT: possibility to create orifices without material losses and stress concentration.

32 cl, 24 dwg